Autumn leaf color is a phenomenon that affects the normally green leaves of many deciduous trees and shrubs.  For a few weeks in the autumn season, trees change from green to different colors that range from red to yellow. 

This phenomenon is commonly called "fall colors" or "autumn colors," while the expression "fall foliage" usually indicates the viewing of a forest whose leaves have undergone the change.  In some areas of the United States and Canada, "leaf peeping" tourism in the autumn is a major source of economic activity.

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This site contains original photography, much of which was taken in the Little Wolf Nature Preserve.